I am unable to locate any information or mention of Remington Custom shop chambering rifles in Weatherby calibers during the 1970's with Weatherby Trademark.
I have a Remington 40-XB factory chambered in Weatherby .257 mag. The Barrel is blued, 26" heavy contour,1in12". Barrel is marked with Weatherby trademark signature, Remington date Code T, Remington proof, bottom of barrel serial numbered to receiver.
Any information would be appreciated.